summarized consecutive images at current directory to one PDF

imagetopdf.zsh

#!/bin/zsh

require=false

[[ ! -f `which pdftk`   ]] && echo 'Require Package pdftk' && require=true
[[ ! -f `which convert` ]] && echo 'Require Package convert (ImageMagick)' && require=true

if [[ $require == true ]] ; then
  exit
fi

mkdir .tmp >/dev/null 2>&1
i=0

for FIMG in `ls` ; do

  i=$[ $i + 1 ]

  if [[ 'jpeg' == ${FIMG##*.} ]] ; then
    mv $FIMG ${FIMG%jpeg}jpg
  fi

  XTNS=${FIMG##*.}

  if [[ 'png' == $XTNS ]] ; then
    FPDF=${FIMG%png}pdf
    convert -page A4 $FIMG $FPDF
    [[ -f $FIMG ]] && yes | mv -f $FIMG .tmp/
  elif [[ 'jpg' == $XTNS ]] ; then
    FPDF=${FIMG%jpg}pdf
    convert -page A4 -compress jpeg $FIMG $FPDF
    [[ -f $FIMG ]] && yes | mv -f $FIMG .tmp/
  elif [[ 'pdf' == $XTNS ]] ; then
    FPDF=$FIMG
  fi

  APDF[$i]=$FPDF

done

TIME=`php -r 'echo time();'`
pdftk $APDF cat output ${TIME}.pdf && rm $APDF